Dose system

ABSTRACT

An apparatus and method for delivering both quick dispensing water treatment materials and slow dispensing water treatment materials from the same dispensing unit by dispensing the slow dispensing water treatment materials over an extended period of time and the quick dispensing water treatment materials in a matter of minutes to allow the container for the quick dispensing water treatment materials to be removed and replaced with either a container containing a different quick dispensing water treatment materials or a container containing a slow dispensing water treatment material and a closed container for holding a quick dispensing water treatment materials therein and for dispensing the quick dispensing water treatment material therefrom through a process of cross circulation between a fluid stream of waster and the quick dispensing water treatment material in the container.

CROSS REFERENCE TO RELATED APPLICATIONS, IF ANY

This application is a division of application Ser. No. 09/923,850, filedAug. 7, 2001 now U.S. Pat. No. 6,814,095.

FIELD OF THE INVENTION

This invention relates generally to dispensing systems and, morespecifically, to a dispensing system for a “dose” type water treatmentmaterial and a method for effectively dispensing two different types ofwater treatment materials one of which is a “dose” type water treatmentmaterial.

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

None

REFERENCE TO A MICROFICHE APPENDIX

None

BACKGROUND OF THE INVENTION

The concept of delivery of two or more water treatment materials from asingle dispersal unit is known in the art as evidenced by Sexton U.S.Pat. No. 5,251,656 and King U.S. Pat. Nos. 6,210,566 and 6,190,547. Ingeneral, in these type of systems unless the system is shut off thewater treatment materials are continually dispensed into the body ofwater.

In order to appreciate the present invention one needs to recognize twotypes of water treatment materials which are herein referred to as“quick dispensing water treatment materials” and “slow dispensing watertreatment materials”.

The term “quick dispensing water treatment materials” as used hereinrefers to water treatment materials that are generally liquid and caneffectively be dispensed into a pool spa or other body of water in amatter of a few seconds. These type of materials are also generallyreferred to as “single dose” materials since they can be emptied into abody of water at once and provide water treatment for a period of daysor weeks. Typical examples of such materials are algaecides, oxidizers,conditioners and clarifiers. In general with the quick dispensing watertreatment materials it is not necessary to continually deliver the watertreatment materials to the body of water since a single application ordose will last for weeks or months. However, for the quick dispensingwater treatment materials to be effective the quick dispensing watertreatment materials need to be dispersed or diffused throughout the bodyof water. Sometimes the quick dispensing water treatment materials,which do not need to be dispensed over an extended period of time, arein fact dispensed over and extended period of time in the same manner asthe slow dispensing water treatment materials. This effectively limitsthe amount of water treatment materials that can be supplied to a bodyof water from a single dispensing unit as well as increases the amountof time for the body of water to achieve effective levels of the quickdispensing water treatment materials since the quick dispensingmaterials are dispensed at slow rates.

In contrast to the manual delivery system for quick dispensing watertreatment materials there are delivery systems for slow dispensing watertreatment materials. Examples of delivery systems for slow dispensingwater treatment materials are shown in my U.S. Pat. No. 6,210,566 titledNestable Containers and Improved Water Treatment Materials and U.S. Pat.No. 6,190,547 titled Water Treatment System and is hereby incorporatedherein by reference. These systems can provide for simultaneouslydeliver of two slow dispensing water treatment materials.

Although the quick dispensing water treatment materials do not need tobe continually dispensed it is important to ensure that the quickdispensing water treatment materials are sufficiently dispersedthroughout the body of water. Typically, the diffusion rate for quickdispensing water treatment materials is not sufficiently high so thatthe quick dispensing water treatment materials can quickly diffusethroughout a large body of water, such as a pool. As a result, evenafter many days have elapsed there still may be regions or pockets inthe pool where the quick dispensing water treatment materials are not ateffective concentrations because of insufficient diffusion of the quickdispensing water treatment materials throughout the body of water.

In order to address the problem of inadequate diffusion, the quickdispensing water treatment materials generally require some intermediatedispensing action to obtain a rapid and effective concentration of quickdispensing water treatment materials throughout the body of water. Oneprior art procedure used by pool owners is to mix the quick dispensingwater treatment materials in a bucket of water. The water in the bucketwhich typically can contain on the order of one to 5 gallons of water,and the quick dispensing water treatment materials are stirred togetherto disperse the quick dispensing water treatment materials throughoutthe water in the bucket. The bucket, with the mixture, is then emptiedaround the sides of the pool to allow the quick dispensing watertreatment materials to diffuse from multiple sites around the pool.

Another method of dispensing a liquid algaecide is shown in Sexton U.S.Pat. No. 5,251,656. Sexton uses two separate containers one for solidchlorine tablets and the other for a liquid algaecide. The liquidalgaecide is held in a plastic bag within an outer container. The liquidalgaecide is prevented from flowing out of the plastic bag by a porousfilter located on the plastic bag. The top of Sexton's outer containercontains openings to allow air to enter the outer container. Byincreasing the pressure on the inside of the container the liquidalgaecide is squeezed out of the plastic bag and allowed to enter thestream of water flowing though his valve. Once the bag containing theliquid algaecide is empty it is replaced with a new filled container.Thus while Sexton continually and simultaneously delivers both anormally quick dispensing water treatment material and a slow dispensingwater treatment material he does not deliver material in dose form formaterials that only need to be applied on a weekly or monthly basis.

In contrast, the present invention permits a quick dispensing watertreatment material to be dispensed into the body of water usually in amatter of minutes or hours while the slow dispensing water treatmentmaterial is dispensed over an extended period of time of weeks. Once thepool is “dosed” the container for the quick dispensing water treatmentmaterial can be removed from the dispensing unit and replaced with adifferent type of quick dispensing water treatment material, for examplea clarifier which can also be dispensed in a matter of minutes.Consequently, a single dispersal member can be used to dispense two ormore different water treatment materials with both “doses” of quickdispensing water treatment material being first dispensed into the bodyof water by the stream of water and secondly the quick dispensing watertreatment material once dispersed allowed to quickly diffuse throughoutthe body of water.

A feature of the present invention is that it eliminates the consumerhaving to measure ingredients every week and then manually dose theswimming pool.

A further feather of the present invention is that there is a morethorough and rapid dispersal of the water treatment material throughoutthe pool by the use of the fluid stream to carry the water treatmentmaterial. This in turn allows for more rapid diffusion of the watertreatment materials throughout the body of water, consequently the bodyof water more quickly obtains the proper treated condition with thepresent invention.

SUMMARY OF THE INVENTION

Briefly, the invention comprise an apparatus and method for deliveringeither or both quick dispensing water treatment materials and slowdispensing water treatment materials from the same dispensing unit bydispensing the slow dispensing water treatment materials over anextended period of time and the quick dispensing water treatmentmaterials in a matter of minutes and if desired, to allow the containerfor the quick dispensing water treatment materials to be removed andreplaced with either a container containing a different quick dispensingwater treatment materials or a container containing a slow dispensingwater treatment material.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a partial sectional view of a container holding a quickdispensing water treatment material;

FIG. 2 is sectional view shown the container of FIG. 1 in a dispensingcondition in a dispersal unit;

FIG. 3 is an alternate embodiment of the invention wherein the dispersalunit is used as the container;

FIG. 4 is a cross sectional view of a container with a seal that ispenetrable by rotation a housing on the container;

FIG. 5 is pictorial view of a container for insertion into a dispersalvalve;

FIG. 6 is a cross sectional view of a dispersal valve holding a liquiddispensing container therein;

FIG. 7 is a cross sectional view of a dispersal valve having nestablecontainer with the inner nestable container replaced with a containerfor holding quick dispensing water treatment materials

FIG. 8 is a front view of a container with an inlet and an outlet fordelivering a slow dispensing water treatment material such as chlorine;and

FIG. 9 is a front view of a container identical to the container shownin FIG. 8 except the container has a single port rather than separateinlets and outlets.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIG. 1 shows a partial cut-away side view of a container for use in thepresent invention.

FIG. 1 shows container 10 in the normal position during transit andstorage. Container 10 comprises a housing 11 having a neck 16 with aremovable closure 15, such as a screw cap extending across spout or neck16 to maintain the liquid 12 within the interior cavity 14 of container10. The container 10 is shown in an upright condition with the liquidlevel indicated by reference numeral 13. The contents of container 11comprise a quick dispensing water treatment material. The container 10is suitable for insertion into either a dispersal valve or a dispersalunit wherein a stream of water flows therethrough. In the embodimentshown housing 11 forms a fixed or rigid three dimensional cavity 14therein that remains in an uncollapsed condition as liquid 12 circulatesout of container 11.

In one embodiment of the present invention the quick dispensing watertreatment materials is located in the closed cavity 14 during transitand storage and is released by an indirect process referred to as “fluidentrainment”. That is, fluid entrainment, can be considered an indirectfluid transfer process whereas flow directly into a container through aseparate inlet and the subsequent flow through a separate fluid outletin the container can be considered a direct fluid transfer. Briefly,fluid entrainment occurs when one fluid flows laterally past anotherfluid at rest. The pressure of the fluid moving past the stationaryfluid is less than the pressure of the fluid at rest causing fluid fromthe container 10 flow into the fluid stream until a state of equilibriumis reached. When the state of equilibrium is reached between the fluidin the container and the moving stream a secondary circulation of fluidoccurs as the fluid in the container is gradually entrained or pulledinto the fluid stream while fresh fluid in the stream slowly flows intothe container to replace the fluid entrained into the fluid stream.

The gradual removable of fluid from within the closed container througha process of entrainment, which causes another portion of the fluidstream to enter the container, dilutes the contents of the container.This results in the gradual dilution of the contents of the container asthe quick dispensing water treatment material is dispensed throughoutthe system. In contrast, in the one shot process a water treatmentmaterial is dumped into a body of water such as a pool or spa and isallowed to diffuse from the spot where the material was dumped into thepool. The process of entrainment with the container shown in FIG. 1 is agradual removal of the contents of the container by allowing fluid to beentrained or dribbled out of the container by use of a single opening onthe container that allows the user to disperse the liquid contents of acontainer into a fluid stream over a period of time ranging from a fewminutes to a few hours. The result is that the water treatment materialin the container can be mixed with a substantial amount of water of thesystem. In contrast, in the container flow through process, which allowswater to flow directly through the container, one quickly displaces theliquid in the container and thus limits the opportunity of mixing theliquid in the container with a substantial amount of water in thesystem.

FIG. 2 shows container 10 with closure 15 removed. Container 10 has beenplaced upside down in a dispersal unit 20 with the single opening 16 aof the container located as the lower most point of the container.Dispersal unit 20 has an inlet 23 and an outlet 24 and a containersupport 25 that extends radially inward to hold the container in asuspended position shown in FIG. 2. As the dispersal unit is located ina line of a pool system the water level might normally rise to a levelin the dispersal valve as indicated by reference numeral 28.Consequently, if container 10 is inverted with the spout 16 locatedbelow the water line the contents 12 of the container will not flow outof container 10. That is, the air pressure Po in the top of thecontainer prevents the liquid 12 from flowing out of the container.Consequently, with the system off but with water in the dispersal unitone can invert the container and still maintain the liquid in container10. In essence the liquid 12 in the container 10 is held within thecontainer 11 by a vacuum formed in chamber 14. The liquid will flow outof the container 10 if air can enter under spout 16 of if liquid flowsin to replace liquid that flows out. As long as air cannot entercontainer 10 the amount of liquid 12 that remains in container 10 isconstant but the liquid therein can be gradually diluted by crosscirculation of fluid between the fluid stream and the liquid in thecontainer.

In order to prevent the water or liquid 12 from escaping during transitor storage a cover 22 can be removably attached to container spout 16 bythe use of threads or the like. One can control the rate of dispensingof material from container 10 by controlling the size of the spout inrelation to the size of the container. That is, the larger the crosssectional area of the spout in relationship to the diameter of thecontainer the more quickly liquid can be entrained or dispensed andconversely the smaller the diameter of the spout in relation to thediameter of the container the slower the liquid in the container will bedispensed or entrained therefrom.

In the embodiment shown in FIG. 2 the container for dispensing materialsinto a stream of water includes: a quick dispensing water treatmentliquid 12 located in container 10 with the container 10 having a singleopening 16 a so that when the container is placed upside down with spout16 below the water line 28 a vacuum within chamber 14 retains the quickdispensing liquid 12 in the container 10 until a stream of water flowinglaterally past the container spout 16 can entrain and carry the quickdispensing water treatment liquid 12 to other parts of the system.

FIG. 2 illustrates the quick dispensing water treatment material 12 isheld in a container 10 within dispersal unit without the quickdispensing water treatment material being dispersed. In order to bringabout “on demand” dispersal of liquid quick dispensing water treatmentmaterial a stream of water is directed through inlet 23 so as tolaterally flow past the open end of spout 16. The action of waterflowing laterally past spout 16 creates a cross circulation between thewater flowing laterally past the spout 16 and the liquid 12 in container10 (indicated by arrows). As a result the cross circulation set upbetween the stream of water and the liquid in the container 10 onegradually dilutes the concentration of liquid in container 10 while theconcentration of water treatment material in the system outside thecontainer increases. In most applications the contents of a containerwhich may be on the order of a gallon of liquid can be dispensed intothe system in an hour or less which provides sufficient time foreffective mixing and dispersing of the liquid into the body of water.Once the water treatment material is dispensed into the fluid stream,the fluid stream caries the water treatment material around the poolwhere the circulation forces produced by the stream of water furtherdisperses the liquid water treatment material around the pool. Oncedispersed around the pool the water treatment material can quicklydiffuse to even remote regions of the pool.

FIG. 3 illustrates another embodiment of the invention wherein adispersal unit 30 includes a cover 31. In the embodiment shown thecontents of container 10 have been poured into the chamber 32 in unit30. The level of water treatment material or water line is indicated byreference numeral 40. Located at the bottom of dispersal unit 30 is aninlet 31 and an outlet 36 with a single port 37 extending laterallyupward into the liquid water treatment material 33 in housing 40. As thewater seeks its level the liquid in this case the quick dispensing watertreatment material that is poured into chamber 32 remains substantiallywithin container 30 in an “on demand” condition. Once water is directedthrough the dispersal valve inlet 35 it creates a cross circulationbetween the liquid 33 in container 30 and the stream of water flowingpast the inlet. In this embodiment the quick dispensing water treatmentmaterial 33 can be poured directly into the dispersal unit 30 and heldin a ready to disperse condition without the need of a separatecontainer in the chamber.

In the system shown in FIG. 3 one can provide a water treatment with adispersal unit 30 having a compartment 32 for containing a quickdispensing water treatment material 33 of a first concentration. Locatedalong the bottom of the dispersal unit is a conduit 39 for directing astream of water along a first axis extending through the conduit and aportion of the dispersal unit 30. The conduit 30 is shown having alateral opening 37 a to chamber 33 so that when a stream of water 40flows through the conduit 39 it generates a lateral cross circulationbetween the quick dispensing water treatment material 33 and the streamof water 40 which gradually dilutes the concentration of water treatmentmaterial 33 in the compartment 32 while increasing the concentration ofquick dispensing water treatment material outside the compartment 32.

FIG. 4 shows a partial sectional view of an alternate embodiment 41which includes punctureable cap or seal 49 that is fastened to acontainer 42. Located on top of container 42 is a cover 46 that includesa female thread 47 and a projection 48 for piercing the punctureableseal 48. The container 42 can contain a quick dispensing water treatmentmaterial. Located around the container 42 and secured to cover 46 is apeelable strip 44 that maintains the cover 46 with the container 42 inthe condition shown. In order to open the container the strip 44 isremoved allowing for rotation of cover 23 which causes member 48 topierce the seal. Thus the container 42 can be ruptured by turning acover to place the container 42 in a position for dispensing of liquid.In a preferred embodiment the seal remains on the container until thecontainer seal is broken by insertion of the container onto a key orsupport in the dispersal unit. This feature eliminates the consumerhaving to come into direct contact with any of the materials held in thecontainer.

FIG. 5 shows a further embodiment of the invention comprising acontainer 51 that is normally used in the nestable containers. The topportion of container 51 is covered by a seal 52 that is punctureable inonly one location to provide a single inlet to the container. Oncepositioned in the dispersal valve the liquid therein can be dispensedinto the stream of fluid flowing therethrough.

FIG. 6 shows a cross sectional view of a dispersal valve 59 having acover 61 on a housing 60. Located on the bottom of housing 60 is arotary valve 66 for directing water past the end of a single opening 65on the bottom of container 62. The container 62 is cutaway to reveal theliquid 63 extending upward to a level indicated by reference numeral 64.As long as the water level in housing 62 is above the spout 65 theliquid 63 remains in container 62. Once water is directed throughconduit 66 it sets up a cross circulation between the liquid incontainer 62 and conduit 66.

FIG. 7 shows dispersal valve 59 with a cover 61 extending over twonesting canisters or containers 69 and 68. Outer container 68 comprisesa container for holding slow dispensing water treatment materials andincludes an inlet 67 and an outlet 65 that permit flow of water throughthe material 72 in the outer annular canister 68. Nested withincontainer 68 is cylindrical container 69 which contains a liquid 70 thatis maintained in container 68 by the pressure Po within the upperportion 71 of container 68 as viewed in FIG. 7. It should be pointed outthat while the outer container contains both an inlet and an outlet fordirecting water therethrough the container 68 contains only a singleinlet so that the water being exchanged between the container and thestream of water occurs by cross circulation rather than directcirculation.

The embodiment of FIG. 7 can form part of a kit for water treatment withthe kit including a first container 68 for holding a slow dispensingwater treatment material that is to be dispensed over a period of weeks.A second container for holding a slow dispensing water treatmentmaterial that is to be dispensed over a period of weeks (not shown). Thesecond container is identical to a third container except the secondcontainer includes both an inlet and an outlet to permit water to bedirected therethrough and the third container contains only a singlespout or port. The third container 69 holds a quick dispensing watertreatment material that is to be dispensed over a period of minutes.

When multiple container are used in conjunction with a dispersal valve60 that simultaneously holds two containers and one of the containershas a configuration that allows for temporary replacement of one of thecontainer one can dose or apply quick dispensing water treatmentmaterials with a system that is intended for use with slow dispensingwater treatment materials. That is once quick dispensing water treatmentmaterials is dispersed, which is usually a matter of minutes, thecontainer can be removed and replaced with a container holding the slowdispensing water treatment materials to allow one to simultaneouslydispensed two the slow dispensing water treatment materials. Thus theconsumer can perform an additional water treatment operations with thepresent invention.

FIG. 8 is a partial cutaway view front view of one embodiment of anestable canister for nesting within the canister of FIG. 7 and forholding dissolvable or erodeable solids such as chlorine tablets orsticks. That is, the slow dispensing water treatment materials. Nestablecanister 70 comprises a cylindrical outer wall 70 a with reinforcinggroves 70 b to provide stiffness to internally nestable canister 70. Afirst finger grip 71 enable the nestable canister 70 to be lifted fromor lowered into the nestable canister 68 shown in FIG. 7. Nestablecanister is preferably made from a polymer plastic or the like.

Nestable canister 70 includes an inlet port 73 for engaging a portion ofthe inlet flow from a dispersal valve and a fluid outlet port 74 fordirecting the portion of the fluid back into the main liquid stream. Thecutaway view shows solid dispersing tablets 9 located within nestablecanister 70. Tablets 9 can typically be chlorine tablets for killingbacteria. The operation of nestable canister 70 is such that a fluidstream flows through an inlet 73 and out through an outlet 74. Thus afluid circulation path is established from one side of container 70 tothe other side of container 70.

FIG. 9 show a partial sectional view of a second nestable canister 75.Nestable canister 75 is identical to container 70 except that canister75 has a single port 76 for the ingress and egress of fluid fromcontainer 75. Thus in the canister 75 a fluid stream does not have andistinct inlet and outlet ports for the fluid stream to enter and leavecanister 75, which prevents direct flow though canister 75. Locatedwithin nestable canister 75 is a liquid 77 which may be an algaecide orthe like. The liquid located in canister 75 is a quick dispensing watertreatment material as previously described while the material 9 locatedin canister 70 is a slow dispensing water treatment material.

Thus the quick dispensing water treatment material 77 is contained in acanister that has only a single port while with the slow dispensingwater treatment material 9 is contained in a canister that has twoports. Note, that both canisters are identical in size and shape whichallows the interchangeably between canister of FIG. 8 and FIG. 9. Thatis, if canister 70 with two ports 73 and 74 can be nested in dispersalvalve 59 a canister with only a single port 76 can likewise be nested indispersal valve 59. This interchangeably of the nesting canisterprovides for enhanced water treatment capacity since either canister canbe used.

Thus a feature of the invention is a new method of treatment of watercomprising the steps of: 1. placing a container 68 having a slow watertreatment material for dissipation over an extended period of time intoa dispersal unit; and 2 placing a container 69 with a quick dispensingwater treatment material into the dispersal valve and allowing a streamof water to flow past the container with the stream of water entrainingthe quick dispensing material to allow the quick dispensing material tobe dispersed throughout system. One can then remove container 69 andplace container 70 with a slow dispensing water treatment materialstherein. Referring to FIG. 1 the present invention also includes a newmethod of water treatment with a quick dispensing material that mightnot include the step of conjunctive use with a slow dispensing watertreatment materials. This process comprises 1. placing the quickdispensing water treatment materials in a container 10; placing thecontainer 10 in a dispersal unit 20; and opening the container 10 afterthe container is in the dispersal unit to allow for fluid communicationbetween a stream of water flowing through the dispersal unit so that thequick dispensing water treatment materials can be gradually dispensedinto the stream of water through a process of fluid entrainment tothereby dispense the contents of the container into a body of water overa relatively short period of time.

It will be understood that one can vary the rate of entrainment byvarying the velocity of the fluid stream flowing past the spout of thecontainer as well as the size of the container spout. While theinvention has been described in relation to a body of water such as apool it is envisioned that the method and apparatus can be used in othersystems that require only dosing as well as those systems that requireboth dosing and long term dispersion of materials. While the system hasbeen shown in relation to a dispersal unit or dispersal valve that couldbe temporary or permanently mounted to the system the present inventionis also useable in various other portions of a water treatment system.For example, if the system is a pool system the present invention couldbe located in the skimmer or in the pool or other portions of thesystem.

1. A container for insertion into a dispersal valve having a stream ofwater flowing therethrough with said container comprising: a housing,said housing forming a three dimensional cavity therein; and a quickdispensing water treatment material located in the cavity formed by saidhousing, said cavity normally closed for holding the quick dispensingwater treatment material therein during transit and storage of the quickdispensing water treatment material, said housing having an openingtherein so that when the stream of water flows laterally past theopening in the housing the stream of water entrains the quick dispensingwater treatment material therein to allow the quick dispensing watertreatment material to be carried throughout a water system by the streamof water.
 2. The container of claim 1 wherein the quick dispensing watertreatment material is granular.
 3. The container of claim 1 wherein thecontainer includes a punctureable seal to permit breaking of the sealduring installation of the container.
 4. The method of treatment ofwater comprising the steps of: placing a first container having a slowdispensing water treatment material for continual dissipation over anextended period of time into a dispersal unit by allowing water to flowin and out of the container; and placing a second container with a quickdispensing water treatment material into the dispersal unit and allowinga stream of water to flow past a port on the container to entrain thequick dispensing water treatment materials to thereby allow the quickdispensing water treatment materiel to be carried throughout a watersystem.
 5. The method of claim 4 including the step of removing thesecond container from the dispersal unit while allowing the firstcontainer to continue to dispense slow dispensing water treatmentmaterials.
 6. The method of claim 5 including the step of replacing thesecond container with a third container having a different slowdispensing water treatment material therein.
 7. The method of watertreatment with a quick dispensing water treatment material comprising:placing a quick dispensing water treatment material in a containerhaving a spout; placing the container in a dispersal unit; opening thecontainer to allow water to flow laterally past the spout to entrain anddispense the quick dispensing water treatment material into a stream ofwater flowing through the dispersal unit; and including the step ofpuncturing a seal on the container during the insertion of the containerinto the dispersal valve.
 8. The method water treatment with a quickdispensing water treatment material comprising: placing a quickdispensing water treatment material in a container having a spout;placing the container in a dispersal unit; opening the container toallow water to flow laterally past the spout to entrain and dispense thequick dispensing water treatment material into a stream of water flowingthrough the dispersal unit; and including the step of opening thecontainer after the container is in the dispersal valve.
 9. A kit forwater treatment comprising: a first container for holding a slowdispensing water treatment material that is to be dispensed over aperiod of weeks; a second container for holding a slow dispensing watertreatment material that is to be dispensed over a period of weeks; athird container for holding a quick dispensing water treatment materialthat is to be dispensed over a period of minutes; and a dispersal valvefor holding two containers with the third container having aconfiguration that allows for temporary replacement of the firstcontainer to allow the quick dispensing water treatment material to bedispensed and when dispensed the third container can be removed andreplaced with the first container for the slow dispensing watertreatment materials.
 10. The kit of claim 9 wherein the first containerand the second container can be simultaneously held in the dispersalvalve.
 11. The kit of claim 9 wherein the third container and the firstcontainer are mechanically interchangeable in the dispersal valve.
 12. Asystem for water treatment comprising: a dispersal valve; a compartmentin said dispersal valve; a stream of water flowing through saiddispersal valve; a container for holding a quick dispensing watertreatment material, said container positionable in said dispersal valveto permit the quick dispensing water treatment material to be indirectlymetered into the stream of water flowing through said dispersal valvewith said container removable from said dispenser for replacement with acontainer for holding a slow release material to be dispensed into afluid stream.
 13. The system of claim 12 wherein the compartment in saiddispersal valve includes a container with a slow dispensing watertreatment material.
 14. A method of water treatment comprising the stepsof: entraining a quick dispensing water treatment material into a streamof water flowing past a dispenser opening; and thereafter dispensing aslow dispensing water treatment material into the stream of water afterthe quick dispensing water treatment material has been dispensed.